In what may turn out to be a precursor to the demise of wired connections, a scientist claims that ultimately, wireless networks won’t have a capacity ceiling.

Researchers have generally thought there was a maximum to the amount of data that could be sent within certain bandwidths, spaces and over a period, even using the best antennas. However, massive multiple input, multiple output (MIMO) antennas will provide for unlimited and thus vast streams of data to be communicated over the airwaves, says Emil Björnson and his fellow researchers at Swedish Linköping University. He says his group has discovered that capacity limit calculations used for the new antennas, expected to be used widely in 5G, are wrong.

What are massive MIMO antennas?

Massive MIMO antennas are basically bigger antenna arrays than are usually used. Instead of just placing a couple of antennas at each end of a link, a system called MIMO, as we see on Wi-Fi routers, for example, you simply scale significantly more antennas. It becomes an appropriately named massive MIMO.

The technology works by more efficiently processing and then sending data, along many signal paths, within the allocated bandwidth.

Linköping University researchers say, though, that the capacity limits being bandied around are moot.

“There is no upper limit for how much data can be transferred,” the researchers say. The wireless signal disturbance calculations that are used to project the amounts of data, called pilot contamination calculations, are flawed and can be junked, they say.

“Large proportions of us who have a choice will soon plump for using cellular for all communications,” he writes. Reasons include competitive costs and that quality is catching up to fixed internet for media streaming.

As an example, he cites in the article his 22-year-old daughter and roommates in their new British apartment-share who haven’t bought a fixed-line broadband service and don’t intend to. She’s quite happy watching cord-cutting TV via good LTE on her smartphone, he explains, particularly as mobile solutions are not much more expensive (there) for them.

Along with that, and if Björnson and his group's theory is correct, we could be seeing the beginning of the end for fixed-line internet.

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